Rod-bender.



To all whom it may concern UNKTED PATENT @FFIQE.

nonnar SAMPLE, or salt reanorsoo, AND LEO A. rLEIrz', or OAKLAND, CALIFORNIA.

ROD-BENDER.

Specification of Letters ?atent.

Patented 0611214913.

Application filed April 2, 1913. serial No. 758,343.

Be it known that we, ROBERT Rod-Benders, of which the following is a specification.

This invention relates to rod bending, mechanism, and particularly to a portable device wherein may be bent rods, and particularly rods used for reinforcing building, 7

, here shown as ,comprisi'ng parallel angle or concrete structures.

. It is an object of the present invention to i provide a device or apparatus capable of a variety of adjustments, whereby bars may 1 be bent to form the desired reinforce memher; the. apparatus including interchangeable, removable dowel pins for holding and about which the rod may be bent at diverse points to produce thedesired form.

The invention consistsof the parts and the construction and combination of parts as hereinafter more fully. described and claimed having reference to the accompanyof a bottom or channel iron 3, above which is arranged an anglefiron 4; the "two being connected in parallelism, one above the other, by any appropriate fastening devices, here shown as plates or braces 5, connecting the rear flange of the bottom' or channel iron 3 with the upright leg 6 of the angle iron 4. The forward superimposed edges of the members 3 and 4 are riveted together by rivets 7 surrounded by fillers or spacers 8, there being provided a suitable number of the fastening devices 5-7 throughout the length of the main beam structure 2 as may SAMPLE, of the city and county of San Francisco, State l of, California, and Lao A. Fnnrrz, of Oakland, county of Alameda, State of California, citizens of the United States, have in- 1 vented new and useful Improvements in;

be required to give it the. desired rigidity.

The horizontal leg of the angle iron 4 is provided with a multiplicity of perforations 9; arranged. in staggered relation at suitable pitch and into any of these may be inserted one or more dowel pins '10 havingredu'ced lower ends 11 insertible in complementary 1 apertures 12 formed for their reception in the channel iron 3. v v

Secured adjacent, to'the. ends of, the main or rear beam 2 of the device are transversely projecting guides 18 suitably formed and irons 14, arranged with their upright flanges in close juxtaposition and leaving aspace .throughwhich mav be adjusted slides 15, here shown as of T-iron. The depthfof the slides15 is nearly equal to the distance between the bottom of theangle iron i and the top surface of Y the. base channel iron .3 of the rear beam 2; the slides .15 passing between the members of the beam and being adapted for adjustment relatively to the rear beaInQ, so that'a front movable beam structure 16 can beshifted parallelly to and from the rear beam 2. The front beam 16 isrigidly secured to the outer ends of the slides 15, and the heads or flanges or the 7 slides 15 are provided respectively with staggered perforations 17 suitably pitched; these perforations being adapted for registration with holes 18 formed in the topor angle member 4; oft-he rear beam 2. NVhen the slides 15 have been adjusted by sliding movement in their guides 13 so as to bring the front beam 16 into the desired position with relation to the stationary beam 2, then look pins 19 can be inserted through the 21, into which may be inserted at suitable locations interchangeable dowel pins 22, the positions of which in the beam 16 are changed as the form of the bar to be produced may determine.

The front or shiftable beam 16 is here shown as composed of angle members 23, one of which is arranged in inverted position on the other so that the legs and flanges of the angle irons form a hollow beam structure which is rigid, comparatively light and of desired strength; the lower channel iron leg being perforated, as at 24, for the reception of the lower smaller ends 25 of the dowel pins 22. The channel members 23 forming the front beam 16 are riveted to gether by rivets 26, similar to the rivets 7 with their fillers or spacers 8.

In operation the mechanic or laborer applies a rod, as 20, against the rear, upwardly projecting flange 6 of the back beam 2 and inserts dowel pins 10 at positions in the beam 2 determined by previously marked points in the length of the rod 20, at which points the rod 20 is to be angularly bent to form the angular parts a, Fig. 1. When these latter have been forcibly turned about the fulcrums, formed by the pins 10 in the back beam 2, to the desired angle, the outer ends of the parts a are then sprung over dowel pins 22, which are placed at the desired distance in the front member 16. The ends of the reinforce rod 20 are then bent rearwardly around the fulcrums formed by the pins 22 until the end portions of the reinforce are brought to the desired angle, as at b, with relation to the central portion of the reinforce supported between the pins 10-10 on the rear beam. Should it be desired to turn back the extremities c of the reinforce rod 20, as in Fig. 1, other pins 22 would be adjusted, as shown, about which the extremities c of the rod may be bent.

One of the important features of the present invention is in so arranging the apertures in the top members of the front and rear beams in such a position that reinforce rods of different transverse dimensions can be readily adjusted in and bent at the apparatus. Therefore, the perforations, as 9, in the rear beam 2 are shown as staggered alternately; the rearmost row of the apertures being usedfor the insertion of their pins 10 when a smaller size reinforce rod is to be bent. In the event that a larger size rod is to be bent, then the pins 10 are adjusted in the outer row of apertures 9, thus increasing the space between the rear surface of the pins and the front surface of the back flange 6 of the beam 2.

For producing bent reinforce rods in which the depth between the central portion of the rod and the parallel offset extension portions b-b varies in the different rods,

then the operator simply unpins the slides 15 and shifts the front beam 16 toward or from the rear beam 2, according to the decrease or increase of depth of the finished reinforce bar.

By providing a large number of apertures throughout the beams 2 and 16 it is possible to bend reinforce rods of greatly difiering finished forms,.and the adjustment of the movable member 16 can be accomplished readily and easily. Thus the present machine embodies a structure capable of producing a great variety of finished reinforce beams by the simple readjustment of its 111- terchangeable pins and the single movable beam or part 16. I V

We provide a templet capable of an almost indefinite number of adjustments by means of the adjustable lines or sets of rela- 7 tively adjustable fulcrums or pins.

Having thus described our invention, what we claim and desire to secure by Letters Patent is up 1. A rod bending apparatus comprising a relatively stationary member provided with a plurality of perforations, interchangeable dowel pins fitting said perforations and being held against movement rela tively to said member, an u right back or.

flange extending parallel to t e row of per forations, and a member hav ng a plurality of perforations and removable, interchangeable dowel pins for insertion in said perforations, said member being adapted for parallel adjustment toward and from the first named member. I

2. A reinforcing rod former comprising a relatively stationary part having a portion against which the rod is supported and said part having a series of perforations throughout its length, removable, interchangeable dowel pins fitting'said perforations and forming a space between their rear edges and the front of said portion for the reception of the rod to be formed, guides on said member, and a movablebeam adjusted toward and from said member and controlled by the guides, said beam having a plurality of perforations and interchangeable dowel pins removably fitting the perforations in said beam, the dowel pins of the former being adapted to act as fulcrums %bout which the rod to be formed may be ent.

8. A rod bender comprising a relatively through the guides transversely of the beam, and a rigid front beam fastened to said guides for movement parallel with relation to the first named stationary beam, said front beam having a plurality of perforations in rows and dowel pins removable and interchangeable with relation to the perforations and about which the rod to be bent may be turned, the movable front member providing for the production of reinforce rods with extended portions of different heights with relation to the central portion of the rods.

In testimony whereof we have hereunto set our hands in the presence of two sub- 15 scribing witnesses.

ROBERT SAMPLE. LEO A. FLEITZ.

Witnesses:

JOHN H. HERRING, W. W. HEALEY.

flopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

